remove unused variables in CV_KDTreeTest_CPP::findNeighbors()

modules/features2d/test/test_nearestneighbors.cpp

@@ -214,8 +214,6 @@ int CV_KDTreeTest_CPP::findNeighbors( Mat& points, Mat& neighbors )
     const int emax = 20;
     Mat neighbors2( neighbors.size(), CV_32SC1 );
     int j;
-    vector<float> min(points.cols, static_cast<float>(minValue));
-    vector<float> max(points.cols, static_cast<float>(maxValue));
     for( int pi = 0; pi < points.rows; pi++ )
     {
         // 1st way